Besides pulling off the intake manifold to clean the oil residue out, has anyone tryied anything else with good results?
I just installed a NW DCAI and saw how coated the manifold is, I will be installing an oil catch asap.

 

Mine cleaned itself pretty well on it's own after 2-3 months after installing my catch can.

Bloody MAGIC!

I looked in with a borescope when installing a 74 mm throttle body.

And top-tier gas, of course.

 

There is someone who shared a cleaning procedure using Sea Foam that was "sucked into the throttle-body" by disconnecting a vacuum line at the power brake booster. He claimed it was a cleaning method used by M-B mechanics. Here's the link to the thread: CLICK

 

I did end up finding that post. Thanks for putting up the link to it.